wallace



3 Sheets-Sheet 1.

D L E I I m PM I OH. .A RM &m M N m mm S W W W d 0 M 0 W No. 465,301.Patented Dec. 15,1891.

flilness cs.

(No Model.) 3'S11eets-Sheet 2.

W. W. WALLACE & R. G. PENFIELD.

STEAM 'BRIGK MACHINE.

No. 465,301. I Patented Dec. 15, 1891.

3 Sheets-Sheet 3.

WLW. WALLACE 8B R. G. PENFIBLD.

STEAM BRIGK MACHINE.

No. 465,301. Patented 1390.15, 1891.

'(No Model.)

' NITE i STATES PATENT oF' C VILLIAM W. VALLAOE AND RAYMOND C. PENFIELD,OF VILLOUGHBY, OHIO, ASSIGNORS TO J. F'PENFIELD & SON, OF SAME PLACE.

STEAM BRICK-MACHINE.

SPECIFICATION forming part of Letters Patent No. 465,301, dated.December, 15, 1891.

v I Applicationfiled $eptember 3, 1891. serial No. 404,651. (No model.)

hereby declare the following to be a full,

clear, and exact description ofthe invention,

' such as will enable others skilled in the art to which it pertains tomake and use the same. Our invention relates to improvements inhorizontal and preferably double-acting steam brick-machines; and itconsistsin certain fea tures of construction and in combination of partshereinafter described, and pointed out in the claims. e may here remarkthat this class of brick machines is usuallyof large size and capacity.Otherwise they would have no particular advantage over ordinarybrick-machines. For instance, the machines that we manufacture, such ashereinafter described, are intended to manufacture about a hundredthousand bricks per day, from which will be inferred the fact that themovable parts are necessarily large, which, together with the largeamount of sharp-cutting material passing through the machine, causesexcessive wear and tear, especially in the compression-box, and unlessthe construction be such that the wearing parts can be easily andcheaply renewed such machine would be considered impracticable.

In the accompanying drawings, Figures 1 and '2 are respectively sideelevation and plan, each partly in section. Fig. 3 is an end elevation.Fig. lis a perspective view of one of the compression-boxes detached,and Figs. 5 and 6 are perspective views of lining-plates for the same.Fig. 7 is a side elevation in detail of a plunger and cut-off plate fora compression-box.

A represents a horizontal steam-cylinder, supposed to be of large size,and B B are the compression-boxes, made square or rectangular incrosssection, and these compressionboxes are of course set in line withcylinder A. The latter is provided with the usual heads A, piston, andpiston-rod A the vpiston being attached to the longitudinal center ofthe rod and the rod extending out through the stuffing-boxes a a of thecylinder heads.

The vplungers B B of the compressionboxes are mounted on the respectiveends of the piston-rod A Dies of any desired form, and usually a seriesof them, are secured at the outer ends of the compression-boxes, as atO. Heretofore with this class of machines the compression-boxes wereusually cylindri cal and bored; but anymaterial that is soft enough tobore will wear out so fast that the frequent renewal of such cylindricalcompression-box is a serious objection. To overcome this difficulty weconstruct the compression-boxes square or rectangular in crosssection,and we line these boxes with flat-faced chilled-iron plates B B (Shownin detail in fit in between the top and bottom plates B thus supportingthe latter, and the plates are held endwise by means of ears I) of theplate, these cars being bolted to the ends of the compression-box. Theseplates should be cast of hard metal and the innerfaces thereof arepreferably chilled, and if these chilled faces are fairly smoothcastings no dressing or fitting is required, and they will eventuallyand soon wear smooth. To provide for the wear on the plungers 13, theseare provided with packing-plates b, that fit in groovesb of theplungers. The packing-plates b are supposed to be of cast-iron, and areeasily and cheaply renewed. D are upright puggingmills of ordinaryconstruction, and are mounted above'the respective boxes 13, the latterhaving large induction-openings 13, directly under the pugging-mill, toreceive the discharge from the pugging-mill. Each plunger B is providedwith a cut-off plate E, extending from thence inward or toward thesteamcylinder. These plates E cover openings B when the respectivepistons are thrust outward past these openings, pending which the muddischarged from the pugging-mil'l above piles upon the opposing 'plateE, and when the plate is withdrawn by the reverse movement of theplunger the charge of mud is supposed to fall by gravity into thecompressionbox. When, however, the material is of a stiff and stickycharacter, it will sometimes become so packed into the chamber aboveplate E that it will not fall by gravity alone, and to guard againstthis we employ a'pairof Figs. 5 and 6.) As shown, the side plates B nfeed-rollers F F, located directly over the in duction of acompression-box. These feedrollers revolve intermittently, stopping whenaperture B is closed and starting when this aperture is open. Thedriving-pulley ffor each pair of rolls is of the well-knownfriction-clutch variety, and the lever that opens and closes the clutchdepends and operates in cam-slot j of the opposing plate J, the latterbeing attached to the adjacent cross-head H. The steam-valve (not shown)may be of any suitable variety, and this is preferably actuated by hand-lever K, and the induction steam-port could be made so small that onlya slow movement of the piston could be had with a full head of steam andwith the machine running empty, from which it will be inferred that nodamage is likely to accrue by reason of the steam-piston striking thecylinder-head. The valve of course could be operated automatically, ifsodesired; but in this connection We will add that it is very difficnlt,if not impracticable, to have always a uniform discharge of materialfrom the pugging-mills, and. if the operator actuates the valve by handhe can operate the machine faster or sloweryaccording as the puggingmilldelivers material faster or slower, and hence We consider it betterpractice to operate the valve by hand. The piston-rod between thesteam-cylinder and compressionboxes is provided with cross-heads H, thatengage and travel on ways h, whereby the weight of the steam-piston andof the plungers is in the main sustained to prevent excessive wear onthe bottom of the cylinder and compression-boxes.

What we claim is- 3. In a horizontal steam brick-machine,the

combination, with rectangular compressionboxes, substantially asindicated, of liningplates for the same, such plates having ears forfastening to the ends of the compression boxes, substantially as setforth.

4. A horizontal steam brick-machine comprising steam-cylinder andcompressionboxes, substantially as indicated, puggingmill andfeed-rollers located between theeduction of a pugging-mill andtheinduction of a compression-box, and automatic shifting mechanismoperated from the brick'machine for stopping and starting thefeed-rollers, substantial] y as set forth.

In testimony whereof we sign this specification, in the presence of twoWitnesses, this 27th day of July, 1891.

WILLIAM WV. WVALLAOE. RAYMOND C. PEN FIELD.

Witnesses:

O. L. GRAY, L. W. PENFIELD.

